#include "head.h"
int main(void){
	int a,b,i,c=5330;
	printf("enter two numbers:");
	scanf("%d %d",&a,&b);
	printf("add:%d\n",add(a,b));
	printf("sub:%d\n",sub(a,b));
	printf("mul:%d\n",mul(a,b));
	printf("div:%1f\n",div(a,b));
        for(i=0;i<c;i++){
        }
	return 0;
}
